Joe/Molly ate outdoors in good weather and preferred their food to be served beside the grass garden. This cat, abandoned by a neighbor who was going through hard times, began availing himself of Joe/Mollie's food which really wasn't working for them. It was clear he wasn't going anywhere so he has joined the family, now neutered and utd on shots. He likes me to pet him and has mastered the "Flop and Roll." That's his winter abode in the top right photo. It plugs in so is warm in cold weather. Welcome, Mr. Black.
Update. Now that Joe/Molly have passed over the Rainbow Bridge Mr. Black has the area to himself. And he has access to Moonshadow's barn. Moonie's not crazy about the arrangement but she tolerates him.